{"title":"2\" - 3.5\" Midrange Speakers","description":null,"products":[{"product_id":"soundqubed-hdx-series-3-5-midrange-speakers-pair","title":"SoundQubed HDX Series 3.5\" Midrange Speakers (pair)","description":"\u003ch2\u003e\n\u003cstrong\u003eSoundQubed HDX Series 3.5\" Midrange Speaker\u003c\/strong\u003e — Glass Fiber Cone | 1-Way | Pair\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSoundQubed HDX Series 3.5\" Midrange\u003c\/strong\u003e is a dedicated midrange driver built for enthusiasts who want precise, high-output midrange reproduction in their car audio system. Featuring a \u003cstrong\u003eglass fiber cone\u003c\/strong\u003e, \u003cstrong\u003erubber surround\u003c\/strong\u003e, a \u003cstrong\u003e310g barium ferrite magnet\u003c\/strong\u003e, and a \u003cstrong\u003e1\" \/ 25.5mm KSV voice coil\u003c\/strong\u003e, the HDX 3.5\" delivers \u003cstrong\u003e40W RMS \/ 120W max\u003c\/strong\u003e at \u003cstrong\u003e86 dB sensitivity\u003c\/strong\u003e with a frequency response of \u003cstrong\u003e120 Hz–20 kHz\u003c\/strong\u003e. Designed for use with a high-pass crossover at \u003cstrong\u003e140 Hz\u003c\/strong\u003e, it’s the ideal midrange driver for 3-way component builds, A-pillar installs, and any application where a dedicated midrange is needed to fill the gap between your tweeters and woofers. Sold as a pair. No grill included.\u003c\/p\u003e\n\n\u003cp\u003eThe HDX 3.5\" is a \u003cstrong\u003e1-way driver\u003c\/strong\u003e — meaning it’s a pure midrange with no integrated tweeter. It’s designed to be crossed over at \u003cstrong\u003e140 Hz high-pass\u003c\/strong\u003e and paired with a dedicated tweeter (such as the SoundQubed HDX Series 2.2\" Titanium Dome Tweeter) for a complete front stage. The \u003cstrong\u003eglass fiber cone\u003c\/strong\u003e and \u003cstrong\u003erubber surround\u003c\/strong\u003e deliver accurate, detailed midrange reproduction with controlled resonance, while the \u003cstrong\u003e310g barium ferrite magnet\u003c\/strong\u003e provides a solid motor for clean, punchy output at real amplifier power levels.\u003c\/p\u003e\n\n\u003cp\u003eThe T\/S parameters reflect a driver purpose-built for midrange duty: \u003cstrong\u003eFs of 140 Hz\u003c\/strong\u003e, \u003cstrong\u003eXmax of 1.4mm\u003c\/strong\u003e, \u003cstrong\u003eVas of 0.55L\u003c\/strong\u003e, and a \u003cstrong\u003econe area (Sd) of 32cm²\u003c\/strong\u003e. Small, focused, and efficient — exactly what a dedicated midrange should be.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the SoundQubed HDX Series 3.5\" Midrange?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e40W RMS \/ 120W MAX @ 4Ω\u003c\/strong\u003e — Handles real amplifier power for a 3.5\" midrange — pairs well with any SoundQubed 4-channel amplifier running bandpass or HPF.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e86 dB Sensitivity (1W\/1m)\u003c\/strong\u003e — Efficient output for a dedicated midrange driver — keeps up with your tweeters and woofers without excessive power.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlass Fiber Cone + Rubber Surround\u003c\/strong\u003e — Stiff, lightweight cone material delivers accurate, detailed midrange with controlled resonance and long-term durability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e310g Barium Ferrite Magnet\u003c\/strong\u003e — Solid motor for a 3.5\" driver — clean, punchy midrange output at real power levels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120 Hz–20 kHz Frequency Response\u003c\/strong\u003e — Purpose-built midrange range — covers vocals, instruments, and upper harmonics with clarity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecommended HPF at 140 Hz\u003c\/strong\u003e — Cross over at 140 Hz to protect the driver and keep it operating in its optimal range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact 3.5\" \/ 89mm Footprint\u003c\/strong\u003e — 2.80\" \/ 71mm baffle cutout fits A-pillar pods, dash locations, and custom midrange mounts with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold as a Pair\u003c\/strong\u003e — Two drivers included for a balanced, symmetrical front-stage midrange image.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation \u0026amp; Pairing Recommendations\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003e3-Way Component Build:\u003c\/strong\u003e The HDX 3.5\" midrange is designed for use in a 3-way component system. Pair it with the \u003cstrong\u003eSoundQubed HDX Series 2.2\" Titanium Dome Tweeter\u003c\/strong\u003e (crossed over at 3.8 kHz HPF) and a dedicated 6.5\" or 6x9\" woofer (crossed over at 80–100 Hz LPF) for a complete, high-output front stage. Use an active crossover or DSP to manage the three-way crossover points precisely.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAmplifier Pairing:\u003c\/strong\u003e The HDX 3.5\" handles \u003cstrong\u003e40W RMS \/ 120W max at 4Ω\u003c\/strong\u003e. Run it on a dedicated channel of any SoundQubed 4-channel amplifier with the HPF set at 140 Hz. The Q4-150ABv2, Q4-2000, or Q4-3200 are all excellent choices for a 3-way active front stage build.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e The HDX 3.5\" requires a \u003cstrong\u003e2.80\" \/ 71mm baffle cutout\u003c\/strong\u003e and \u003cstrong\u003e1.52\" \/ 38.7mm mounting depth\u003c\/strong\u003e. Overall diameter is 3.50\" \/ 89mm, overall depth is 1.65\" \/ 42mm. No grill is included — plan your mounting location accordingly. A-pillar pods and custom fiberglass mounts are the most common install locations for this driver.\u003c\/p\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\n\u003ch3\u003eGeneral\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e3.5\" \/ 89mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e4 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eRMS Power Handling\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e40W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eMAX Power Handling\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e120W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eSensitivity (1W\/1m)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e86 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e120 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eRecommended Hi-Pass Crossover\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e140 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eNumber of Ways\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1-Way\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eSold In\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003ePair\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eGrill Included\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eDriver Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eVoice Coil Diameter\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1\" \/ 25.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eVoice Coil Former Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eKSV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eWinding Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eEISV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eCone Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eGlass Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eSurround Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eRubber\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eBasket Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eBasket Color\/Finish\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eBlack Matte\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eMagnet Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eBarium Ferrite\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eMagnet Weight\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e310g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eThiele \u0026amp; Small Parameters\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eEquivalent Volume (Vas)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e0.55L \/ 0.019ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eExcursion One Way (Xmax)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eFree Air Resonance (Fs)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e140 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eMechanical Factor (Qms)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e7.08\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eElectrical Factor (Qes)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.37\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eTotal Factor (Qts)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.15\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eMechanical Mass (Mms)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e3.2g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eMechanical Compliance (Cms)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e402mm\/N\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eBL Factor (BL)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2.938\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eVoice Coil Inductance (Le)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e0.169mH\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eCone Area (Sd)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e32cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eDC Resistance (Re)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e4.20 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eMechanical Mass w\/o Air (Mmd)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e3g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eSpeaker Measurements\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eDimension\u003c\/th\u003e\n      \u003cth style=\"background-color:#222;color:#fff;padding:8px;text-align:left;\"\u003eValue\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eOverall Diameter\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e3.50\" \/ 89mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eOverall Depth\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.65\" \/ 42mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eFront Mount Baffle Cutout\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2.80\" \/ 71mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003eMounting Depth\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1.52\" \/ 38.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eMotor Diameter\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2.36\" \/ 60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is the HDX 3.5\" a full-range speaker or a dedicated midrange?\u003c\/strong\u003e\u003cbr\u003e\nA: It’s a \u003cstrong\u003ededicated 1-way midrange driver\u003c\/strong\u003e — not a full-range speaker. It’s designed to be crossed over at 140 Hz HPF and paired with a dedicated tweeter for a complete front stage. Do not use it without a high-pass crossover.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What tweeter pairs best with the HDX 3.5\" midrange?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003eSoundQubed HDX Series 2.2\" Titanium Dome Tweeter\u003c\/strong\u003e is the natural companion — cross it over at 3.8 kHz HPF and the HDX 3.5\" at 140 Hz HPF for a seamless 2-way or 3-way front stage within the HDX ecosystem.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does the HDX 3.5\" come with a grill?\u003c\/strong\u003e\u003cbr\u003e\nA: No — the HDX 3.5\" midrange does \u003cstrong\u003enot include a grill\u003c\/strong\u003e. Plan your mounting location and pod\/baffle design accordingly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What amplifier channel should I use for the HDX 3.5\" midrange?\u003c\/strong\u003e\u003cbr\u003e\nA: Run it on a dedicated channel of any SoundQubed 4-channel amplifier with the HPF set at 140 Hz. For a 3-way active build, use a DSP to manage the crossover points between your tweeter, midrange, and woofer channels precisely.\u003c\/p\u003e","brand":"SoundQubed","offers":[{"title":"Default Title","offer_id":46117187878956,"sku":null,"price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0656\/8964\/9196\/files\/2__49684.webp?v=1789003820"}],"url":"https:\/\/www.4staraudio.com\/collections\/2-3-5-midrange-speakers.oembed","provider":"4StarAudio","version":"1.0","type":"link"}